Harvia Pro 20 Wood Sauna Stove
The Harvia Pro 20 is a floor standing wood stove for a medium sized sauna, made in Finland. It comes in six versions: the standard front fed stove, three with a water tank, and two that you feed from the room next door.
Member pricing is quoted directly with a specialist, and specifications and availability are confirmed on the same call.
Images: Harvia
What’s in this buildout
A heater never arrives on its own. The buildout is everything it needs to heat a room.
The stove
Harvia Pro 20, in the version your room calls for.
Chimney kit
Professionally installed.
Sauna stones
Included and required.
Sizing is matched to your sauna in consultation.
What we handle
We source quality products that we stand behind, for you, not for the brand, and we build the room around them.
Site preparation
Placement in the room, following the manufacturer's specification.
Delivery and placement
Freight coordination to your site, and the stove placed in the room it heats.
Assembly
Installed as part of the sauna build, with the stones loaded.
Protection
Guards and clearances set at install and checked when we come back.
Support after the build
Service and guidance after the build, from someone who picks up the phone in year three.


What we can put in writing.
Anything not listed here is confirmed with you during the consultation rather than published as a guess.
- Exterior dimensions
- 16.9"W x 20.1"D x 29.9 to 31.1"H
- Family
- Harvia Pro Series
- Configurations
- Pro 20 (Front fed floor stove with adjustable legs), Pro 20 ES (Adds a 20 liter water tank on the front), Pro 20 LS (Adds a fixed 30 liter water tank on the left side), Pro 20 RS (Adds a fixed 30 liter water tank on the right side), Pro 20 SL (Fed through the wall from the next room; the door can be hung to open either way), Pro 20 Duo (Fed through the wall, with a stainless casing and a glass fireplace door in the next room)
- Fuel
- Wood
- Feeding
- Front fed, or through the wall on the SL and Duo
- Room volume
- 283 to 706 cu. ft.
- Sauna stones
- 88 lbs
- Water tank
- 20 liters on the ES, 30 liters on the LS and RS
- Made in
- Finland
- Construction
- Steel, graphite black casing with a stainless steel front
- Door
- Cast iron framed glass door
- Installation
- Floor, on adjustable legs
- Flue connection
- Top and back
- Maximum firewood length
- 15" (39 cm)
- Firewood diameter
- 3 to 6" (8 to 15 cm)
- Pro 20 size
- 16.9"W x 20.1"D x 29.9 to 31.1"H (43 x 51 x 76 to 79 cm)
- Pro 20 weight
- 116.8 lbs (53 kg); 204.8 lbs (92.9 kg) with stones
- Pro 20 minimum room height
- 82" (209 cm)
- Pro 20 ES size
- 17"W x 25.6"D x 30"H
- Pro 20 ES weight
- 143.3 lbs (65 kg)
- Pro 20 ES water tank
- 20 liters, on the front
- Pro 20 ES minimum room height
- 83"
- Pro 20 LS and RS size
- 23"W x 20"D x 30"H
- Pro 20 LS and RS weight
- 132.3 lbs (60 kg)
- Pro 20 LS and RS water tank
- 30 liters, fixed, on the left (LS) or right (RS) side
- Pro 20 LS and RS minimum room height
- 81"
- Pro 20 SL size
- 17"W x 28.7"D x 30"H (430 x 730 x 760 mm)
- Pro 20 SL weight
- 137.8 lbs (62.5 kg); shipping weight with stones 225.8 lbs (102.4 kg)
- Pro 20 SL feeding
- Through the wall, from the next room
- Pro 20 SL maximum firewood length
- 13.7" (350 mm)
- Pro 20 SL minimum room height
- 81.1" (2060 mm)
- Pro 20 Duo size
- 17"W x 20"D x 30"H
- Pro 20 Duo weight
- 176.4 lbs (80 kg)
- Pro 20 Duo feeding
- Through the wall, with a glass fireplace door in the next room
- Pro 20 Duo minimum room height
- 82"
What the maker builds in.
- Installation and operation manual, Pro 20 (PDF) (opens in a new tab)
- Installation and operation manual, Pro 20 ES, LS and RS (PDF) (opens in a new tab)
- Installation and operation manual, Pro 20 SL and Duo (PDF) (opens in a new tab)
- Spec sheet, Pro 20 (PDF) (opens in a new tab)
- Spec sheet, Pro 20 ES (PDF) (opens in a new tab)
- Spec sheet, Pro 20 LS (PDF) (opens in a new tab)
- Spec sheet, Pro 20 RS (PDF) (opens in a new tab)
- Spec sheet, Pro 20 SL (PDF) (opens in a new tab)
- Spec sheet, Pro 20 Duo (PDF) (opens in a new tab)
What sets it apart
- Steel body with a graphite black casing and a stainless steel front
- Cast iron framed glass door so the fire shows in the room
- Large stone compartment holding 88 lbs of sauna stones
- Adjustable legs for a level stand on the floor
- Flue connects at the top or the back
- Water tank versions: 20 liters on the front (ES), 30 liters on the left (LS) or right (RS)
- Through the wall versions (SL and Duo) are fed from the next room, keeping firewood out of the sauna
- The Duo turns its feeding side into a glass fronted fireplace
- Designed and made in Finland
In the kit from the maker
- Sauna stove
- Stove door
- Ash box
- Adjustable legs
- Installation and operation manual
About this buildout.
The Pro 20 is a steel stove with a graphite black casing, a stainless steel front and a cast iron framed glass door, so you see the fire from the benches. It stands on adjustable legs, takes 88 lbs of sauna stones, and connects to the flue at the top or the back. Harvia lists it for a room volume of 283 to 706 cu. ft.
The Pro 20 ES carries a 20 liter water tank on the front. The Pro 20 LS and Pro 20 RS carry a fixed 30 liter tank on the left or the right side, which makes them wider than the standard stove.
The Pro 20 SL and the Pro 20 Duo are fed through the wall: the stove sits in the sauna and the firebox door opens into the next room, so firewood never comes into the hot room. The Duo has a stainless steel casing and a large glass door on that side, so the next room gets a fireplace.
The maker’s photographs.
Images: Harvia
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See this buildoutQuestions about the Harvia Pro 20 Wood Sauna Stove.
The standard behind it.
What comes with every sanctuary we build.
- Sanctuary Builders
- Sanctuary Approved
- Local Service Guarantee
Read what they say about the build.
5.0 on Google across 80+ verified reviews. Each review below links to the original on Google.
“David, the owner, worked with us to get a high quality sauna. David is very responsive, knowledgeable, honest and responsive. He will have your sauna delivered to your home. He will then assemble the sauna and remove all the packaging. I highly recommend purchasing a sauna from Sauna Friend.”
Dennis DonovanFort Collins, CORead it on Google (opens in a new tab) “Sauna Friends were exceptional! They fixed my sauna door, added flashing, and reinstalled my sauna roof. I looked for sauna-specific professionals to do these repairs so I could be confident they'd know what they're doing, and they did.”
Jessmine AndersonColoradoRead it on Google (opens in a new tab) “Worthy of 10 stars! Went above and beyond to ensure we had full understanding in everything: the sauna we purchased, the ordering, delivery, and setup. Absolutely love our sauna and worth every penny. David was incredibly knowledgeable and went out of his way to over-deliver. Highly recommend working with David!”
Nicholas LoscalzoColoradoRead it on Google (opens in a new tab)
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